/**
 *    Copyright ${license.git.copyrightYears} the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.codegen.mybatis3.xmlmapper.elements;

import java.util.Iterator;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.OutputUtilities;
import org.mybatis.generator.api.dom.xml.Attribute;
import org.mybatis.generator.api.dom.xml.TextElement;
import org.mybatis.generator.api.dom.xml.XmlElement;
import org.mybatis.generator.codegen.mybatis3.ListUtilities;
import org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities;

/**
 * 
 * @author Jeff Butler
 * 
 */
public class UpdateByExampleWithBLOBsElementGenerator extends AbstractXmlElementGenerator {

  public UpdateByExampleWithBLOBsElementGenerator() {
    super();
  }

  @Override
  public void addElements(XmlElement parentElement) {
    XmlElement answer = new XmlElement("update"); //$NON-NLS-1$

    answer.addAttribute(new Attribute("id", //$NON-NLS-1$
        introspectedTable.getUpdateByExampleWithBLOBsStatementId()));

    answer.addAttribute(new Attribute("parameterType", "map")); //$NON-NLS-1$ //$NON-NLS-2$
    context.getCommentGenerator().addComment(answer);

    StringBuilder sb = new StringBuilder();
    sb.append("update "); //$NON-NLS-1$
    sb.append(introspectedTable.getAliasedFullyQualifiedTableNameAtRuntime());
    answer.addElement(new TextElement(sb.toString()));

    // set up for first column
    sb.setLength(0);
    sb.append("set "); //$NON-NLS-1$

    Iterator<IntrospectedColumn> iter = ListUtilities.removeGeneratedAlwaysColumns(introspectedTable.getAllColumns())
        .iterator();
    while (iter.hasNext()) {
      IntrospectedColumn introspectedColumn = iter.next();

      sb.append(MyBatis3FormattingUtilities.getAliasedEscapedColumnName(introspectedColumn));
      sb.append(" = "); //$NON-NLS-1$
      sb.append(MyBatis3FormattingUtilities.getParameterClause(introspectedColumn, "record.")); //$NON-NLS-1$

      if (iter.hasNext()) {
        sb.append(',');
      }

      answer.addElement(new TextElement(sb.toString()));

      // set up for the next column
      if (iter.hasNext()) {
        sb.setLength(0);
        OutputUtilities.xmlIndent(sb, 1);
      }
    }

    answer.addElement(getUpdateByExampleIncludeElement());

    if (context.getPlugins().sqlMapUpdateByExampleWithBLOBsElementGenerated(answer, introspectedTable)) {
      parentElement.addElement(answer);
    }
  }
}
